<?php
/**
 * @package   Options_Framework
 * @author    Devin Price <devin@wptheming.com>
 * @license   GPL-2.0+
 * @link      http://wptheming.com
 * @copyright 2010-2014 WP Theming
 */

class Options_Framework_Admin {

    /**
     * Page hook for the options screen
     *
     * @since 1.7.0
     * @type string
     */
    protected $options_screen = null;

    /**
     * Hook in the scripts and styles
     *
     * @since 1.7.0
     */
    public function init() {

        // Gets options to load
        $options = & Options_Framework::_optionsframework_options();

        // Checks if options are available
        if ( $options ) {

            // Add the options page and menu item.
            add_action( 'admin_menu', array( $this, 'add_custom_options_page' ) );

            // Add the required scripts and styles
            add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_admin_styles' ) );
            add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_admin_scripts' ) );

            // Settings need to be registered after admin_init
            add_action( 'admin_init', array( $this, 'settings_init' ) );

            // Adds options menu to the admin bar
            add_action( 'wp_before_admin_bar_render', array( $this, 'optionsframework_admin_bar' ) );

        }

    }

    /**
     * Registers the settings
     *
     * @since 1.7.0
     */
    function settings_init() {

        // Get the option name
        $options_framework = new Options_Framework;
        $name = $options_framework->get_option_name();

        // Registers the settings fields and callback
        register_setting( 'optionsframework', $name, array ( $this, 'validate_options' ) );

        // Displays notice after options save
        add_action( 'optionsframework_after_validate', array( $this, 'save_options_notice' ) );

    }

    /*
     * Define menu options
     *
     * Examples usage:
     *
     * add_filter( 'optionsframework_menu', function( $menu ) {
     *     $menu['page_title'] = 'The Options';
     *	   $menu['menu_title'] = 'The Options';
     *     return $menu;
     * });
     *
     * @since 1.7.0
     *
     */
    static function menu_settings() {

        $menu = array(

            // Modes: submenu, menu
            'mode' => 'submenu',

            // Submenu default settings
            'page_title' => __( 'Puock主题设置', 'theme-textdomain' ),
            'menu_title' => __( 'Puock主题设置', 'theme-textdomain' ),
            'capability' => 'edit_theme_options',
            'menu_slug' => 'options-framework',
            'parent_slug' => 'themes.php',

            // Menu default settings
            'icon_url' => 'dashicons-admin-generic',
            'position' => '61'

        );

        return apply_filters( 'optionsframework_menu', $menu );
    }

    /**
     * Add a subpage called "Theme Options" to the appearance menu.
     *
     * @since 1.7.0
     */
    function add_custom_options_page() {

        $menu = $this->menu_settings();

        // If you want a top level menu, see this Gist:
        // https://gist.github.com/devinsays/884d6abe92857a329d99

        // Code removed because it conflicts with .org theme check.

        $this->options_screen = add_theme_page(
            $menu['page_title'],
            $menu['menu_title'],
            $menu['capability'],
            $menu['menu_slug'],
            array( $this, 'options_page' )
        );

    }

    /**
     * Loads the required stylesheets
     *
     * @since 1.7.0
     */

    function enqueue_admin_styles( $hook ) {

        if ( $this->options_screen != $hook )
            return;

        wp_enqueue_style( 'optionsframework', OPTIONS_FRAMEWORK_DIRECTORY . 'css/optionsframework.css', array(),  Options_Framework::VERSION );
        wp_enqueue_style( 'wp-color-picker' );
    }

    /**
     * Loads the required javascript
     *
     * @since 1.7.0
     */
    function enqueue_admin_scripts( $hook ) {

        if ( $this->options_screen != $hook )
            return;

        // Enqueue custom option panel JS
        wp_enqueue_script(
            'options-custom',
            OPTIONS_FRAMEWORK_DIRECTORY . 'js/options-custom.js',
            array( 'jquery','wp-color-picker' ),
            Options_Framework::VERSION
        );

        // Inline scripts from options-interface.php
        add_action( 'admin_head', array( $this, 'of_admin_head' ) );
    }

    function of_admin_head() {
        // Hook to add custom scripts
        do_action( 'optionsframework_custom_scripts' );
    }

    /**
     * Builds out the options panel.
     *
     * If we were using the Settings API as it was intended we would use
     * do_settings_sections here.  But as we don't want the settings wrapped in a table,
     * we'll call our own custom optionsframework_fields.  See options-interface.php
     * for specifics on how each individual field is generated.
     *
     * Nonces are provided using the settings_fields()
     *
     * @since 1.7.0
     */
    function options_page() { ?>

        <div id="optionsframework-wrap" class="wrap">

            <?php $menu = $this->menu_settings(); ?>
            <?php require get_template_directory().'/inc/setting/options-inc.php' ?>
            <h2 class="nav-tab-wrapper">
                <?php echo Options_Framework_Interface::optionsframework_tabs(); ?>
            </h2>

            <?php settings_errors( 'options-framework' ); ?>

            <div id="optionsframework-metabox" class="metabox-holder">
                <div id="optionsframework" class="postbox">
                    <form action="options.php" method="post">
                        <?php settings_fields( 'optionsframework' ); ?>
                        <?php Options_Framework_Interface::optionsframework_fields(); /* Settings */ ?>
                        <div id="optionsframework-submit">
                            <input type="submit" class="button-primary" name="update" value="<?php esc_attr_e( '保存配置', 'theme-textdomain' ); ?>" />
                            <input type="submit" class="reset-button button-secondary" name="reset" value="<?php esc_attr_e( '恢复默认', 'theme-textdomain' ); ?>" onclick="return confirm( '<?php print esc_js( __( '是否确认恢复默认配置？', 'theme-textdomain' ) ); ?>' );" />
                            <div class="clear"></div>
                        </div>
                    </form>
                </div> <!-- / #container -->
            </div>
            <?php do_action( 'optionsframework_after' ); ?>
        </div> <!-- / .wrap -->

        <?php
    }

    /**
     * Validate Options.
     *
     * This runs after the submit/reset button has been clicked and
     * validates the inputs.
     *
     * @uses $_POST['reset'] to restore default options
     */
    function validate_options( $input ) {

        /*
         * Restore Defaults.
         *
         * In the event that the user clicked the "Restore Defaults"
         * button, the options defined in the theme's options.php
         * file will be added to the option for the active theme.
         */

        if ( isset( $_POST['reset'] ) ) {
            add_settings_error( 'options-framework', 'restore_defaults', __( '已重置为默认配置', 'theme-textdomain' ), 'updated fade' );
            return $this->get_default_values();
        }

        /*
         * Update Settings
         *
         * This used to check for $_POST['update'], but has been updated
         * to be compatible with the theme customizer introduced in WordPress 3.4
         */

        $clean = array();
        $options = & Options_Framework::_optionsframework_options();
        foreach ( $options as $option ) {

            if ( ! isset( $option['id'] ) ) {
                continue;
            }

            if ( ! isset( $option['type'] ) ) {
                continue;
            }

            $id = preg_replace( '/[^a-zA-Z0-9._\-]/', '', strtolower( $option['id'] ) );

            // Set checkbox to false if it wasn't sent in the $_POST
            if ( 'checkbox' == $option['type'] && ! isset( $input[$id] ) ) {
                $input[$id] = false;
            }

            // Set each item in the multicheck to false if it wasn't sent in the $_POST
            if ( 'multicheck' == $option['type'] && ! isset( $input[$id] ) ) {
                foreach ( $option['options'] as $key => $value ) {
                    $input[$id][$key] = false;
                }
            }

            // For a value to be submitted to database it must pass through a sanitization filter
            if ( has_filter( 'of_sanitize_' . $option['type'] ) ) {
                $clean[$id] = apply_filters( 'of_sanitize_' . $option['type'], $input[$id], $option );
            }
        }

        // Hook to run after validation
        do_action( 'optionsframework_after_validate', $clean );

        return $clean;
    }

    /**
     * Display message when options have been saved
     */

    function save_options_notice() {
        add_settings_error( 'options-framework', 'save_options', __( '选项配置已保存', 'theme-textdomain' ), 'updated fade' );
    }

    /**
     * Get the default values for all the theme options
     *
     * Get an array of all default values as set in
     * options.php. The 'id','std' and 'type' keys need
     * to be defined in the configuration array. In the
     * event that these keys are not present the option
     * will not be included in this function's output.
     *
     * @return array Re-keyed options configuration array.
     *
     */
    function get_default_values() {
        $output = array();
        $config = & Options_Framework::_optionsframework_options();
        foreach ( (array) $config as $option ) {
            if ( ! isset( $option['id'] ) ) {
                continue;
            }
            if ( ! isset( $option['std'] ) ) {
                continue;
            }
            if ( ! isset( $option['type'] ) ) {
                continue;
            }
            if ( has_filter( 'of_sanitize_' . $option['type'] ) ) {
                $output[$option['id']] = apply_filters( 'of_sanitize_' . $option['type'], $option['std'], $option );
            }
        }
        return $output;
    }

    /**
     * Add options menu item to admin bar
     */

    function optionsframework_admin_bar() {

        $menu = $this->menu_settings();

        global $wp_admin_bar;

        if ( 'menu' == $menu['mode'] ) {
            $href = admin_url( 'admin.php?page=' . $menu['menu_slug'] );
        } else {
            $href = admin_url( 'themes.php?page=' . $menu['menu_slug'] );
        }

        $args = array(
            'parent' => 'appearance',
            'id' => 'of_theme_options',
            'title' => $menu['menu_title'],
            'href' => $href
        );

        $wp_admin_bar->add_menu( apply_filters( 'optionsframework_admin_bar', $args ) );
    }

}